Tx200 lost accurracy today

[Gard72977]

My tx lost all accurracy today. I cleaned the barrel but no help. Put it over the crony for the first time in a long while.velocity has fallen from 850's to 820's. This seemed to happen instantly. 



It has a vortex 12fpe kit with about 3k pellets through it. I'm guessing I have a problem with spring or guide. Don't have time to tear it down today

 

[Trailryder42]

I'm guessing this is a .177 with velocities like that.

The first thing to check would be the breach seal orings

 

[badammo]

The breach seal would be suspect with a small velocity drop and a varied fps. If the spring broke it should have way more than a 30 fps drop.

 

[Gard72977]

The velocity was 809-829 over 5 shots. It was a pretty tight ES when I put the kit in around 10fps. I'm worried that the spring has just loat a little power over time and it's my Weaver T-24 that has bit the dust. 



Scope seems to adjust and track but group is 3-4 inches @50yds.

 

[Stefanjan]

Scope reticle jumping around? Just a thought as my BSA spring rated scope just puked a d that was the first sign. 10 or 12 shots that were all over the place. Started chasing the poi then the windage tracking stopped. Turret still clicks nice but crosshair doesnt move at all.

 

[Brazos]

I have the same kit in my TX and run plenty of other Vortek kits in rifles. When the spring dies it dies hard (like all the sudden without warning). The spring doesn't break. It just looses power suddenly. Just buy a new spring. In fact buy 2 springs to you have one extra on hand.